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Finding the Fourth Proportional to 371,646.61, 512,886.39 and 208,306.10

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Solution

The fourth proportional to 371,646.61, 512,886.39 and 208,306.10 is: 287,470.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,646.61 : 512,886.39 = 208,306.10 : x
  2. Step 2: Convert to fraction form
    371,646.61/512,886.39 = 208,306.10/x
  3. Step 3: Cross multiply
    371,646.61x = 512,886.39 × 208,306.10
  4. Step 4: Simplify right side
    371,646.61x = 106,837,366,152.17
  5. Step 5: Solve for x
    x = 106,837,366,152.17/371,646.61
  6. Step 6: Final answer
    x = 287,470.31

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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.