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Finding the Fourth Proportional to 314,928,686.80, 472,393,030.20 and 286,207,253.20

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Solution

The fourth proportional to 314,928,686.80, 472,393,030.20 and 286,207,253.20 is: 429,310,879.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    314,928,686.80 : 472,393,030.20 = 286,207,253.20 : x
  2. Step 2: Convert to fraction form
    314,928,686.80/472,393,030.20 = 286,207,253.20/x
  3. Step 3: Cross multiply
    314,928,686.80x = 472,393,030.20 × 286,207,253.20
  4. Step 4: Simplify right side
    314,928,686.80x = 135,202,311,604,366,640
  5. Step 5: Solve for x
    x = 135,202,311,604,366,640/314,928,686.80
  6. Step 6: Final answer
    x = 429,310,879.80

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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.