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Finding the Fourth Proportional to 219,551,785.71, 302,978,605.56 and 125,464,862.13

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Solution

The fourth proportional to 219,551,785.71, 302,978,605.56 and 125,464,862.13 is: 173,139,876.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,551,785.71 : 302,978,605.56 = 125,464,862.13 : x
  2. Step 2: Convert to fraction form
    219,551,785.71/302,978,605.56 = 125,464,862.13/x
  3. Step 3: Cross multiply
    219,551,785.71x = 302,978,605.56 × 125,464,862.13
  4. Step 4: Simplify right side
    219,551,785.71x = 38,013,168,974,925,048
  5. Step 5: Solve for x
    x = 38,013,168,974,925,048/219,551,785.71
  6. Step 6: Final answer
    x = 173,139,876.10

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.