Home / 310,391,995.80-465,420,032.10-128,657,544.60

Finding the Fourth Proportional to 310,391,995.80, 465,420,032.10 and 128,657,544.60

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Solution

The fourth proportional to 310,391,995.80, 465,420,032.10 and 128,657,544.60 is: 192,916,696.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,391,995.80 : 465,420,032.10 = 128,657,544.60 : x
  2. Step 2: Convert to fraction form
    310,391,995.80/465,420,032.10 = 128,657,544.60/x
  3. Step 3: Cross multiply
    310,391,995.80x = 465,420,032.10 × 128,657,544.60
  4. Step 4: Simplify right side
    310,391,995.80x = 59,879,798,537,639,184
  5. Step 5: Solve for x
    x = 59,879,798,537,639,184/310,391,995.80
  6. Step 6: Final answer
    x = 192,916,696.78

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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.