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Finding the Fourth Proportional to 522,688.24, 721,341.24 and 307,971.40

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Solution

The fourth proportional to 522,688.24, 721,341.24 and 307,971.40 is: 425,019.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,688.24 : 721,341.24 = 307,971.40 : x
  2. Step 2: Convert to fraction form
    522,688.24/721,341.24 = 307,971.40/x
  3. Step 3: Cross multiply
    522,688.24x = 721,341.24 × 307,971.40
  4. Step 4: Simplify right side
    522,688.24x = 222,152,471,560.54
  5. Step 5: Solve for x
    x = 222,152,471,560.54/522,688.24
  6. Step 6: Final answer
    x = 425,019.07

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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.