Home / 310,392,079.80-465,420,158.10-128,657,628.60

Finding the Fourth Proportional to 310,392,079.80, 465,420,158.10 and 128,657,628.60

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Solution

The fourth proportional to 310,392,079.80, 465,420,158.10 and 128,657,628.60 is: 192,916,822.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,392,079.80 : 465,420,158.10 = 128,657,628.60 : x
  2. Step 2: Convert to fraction form
    310,392,079.80/465,420,158.10 = 128,657,628.60/x
  3. Step 3: Cross multiply
    310,392,079.80x = 465,420,158.10 × 128,657,628.60
  4. Step 4: Simplify right side
    310,392,079.80x = 59,879,853,843,783,080
  5. Step 5: Solve for x
    x = 59,879,853,843,783,080/310,392,079.80
  6. Step 6: Final answer
    x = 192,916,822.76

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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.