Home / 310,392,078.80-465,420,156.60-128,657,627.60

Finding the Fourth Proportional to 310,392,078.80, 465,420,156.60 and 128,657,627.60

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Solution

The fourth proportional to 310,392,078.80, 465,420,156.60 and 128,657,627.60 is: 192,916,821.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,392,078.80 : 465,420,156.60 = 128,657,627.60 : x
  2. Step 2: Convert to fraction form
    310,392,078.80/465,420,156.60 = 128,657,627.60/x
  3. Step 3: Cross multiply
    310,392,078.80x = 465,420,156.60 × 128,657,627.60
  4. Step 4: Simplify right side
    310,392,078.80x = 59,879,853,185,376,480
  5. Step 5: Solve for x
    x = 59,879,853,185,376,480/310,392,078.80
  6. Step 6: Final answer
    x = 192,916,821.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.