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Finding the Fourth Proportional to 522,567.64, 721,167.06 and 307,716.76

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Solution

The fourth proportional to 522,567.64, 721,167.06 and 307,716.76 is: 424,663.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,567.64 : 721,167.06 = 307,716.76 : x
  2. Step 2: Convert to fraction form
    522,567.64/721,167.06 = 307,716.76/x
  3. Step 3: Cross multiply
    522,567.64x = 721,167.06 × 307,716.76
  4. Step 4: Simplify right side
    522,567.64x = 221,915,191,121.93
  5. Step 5: Solve for x
    x = 221,915,191,121.93/522,567.64
  6. Step 6: Final answer
    x = 424,663.09

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1.5x scale

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.