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Finding the Fourth Proportional to 458,482.92, 687,645.66 and 121,526.76

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Solution

The fourth proportional to 458,482.92, 687,645.66 and 121,526.76 is: 182,269.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,482.92 : 687,645.66 = 121,526.76 : x
  2. Step 2: Convert to fraction form
    458,482.92/687,645.66 = 121,526.76/x
  3. Step 3: Cross multiply
    458,482.92x = 687,645.66 × 121,526.76
  4. Step 4: Simplify right side
    458,482.92x = 83,567,349,087.86
  5. Step 5: Solve for x
    x = 83,567,349,087.86/458,482.92
  6. Step 6: Final answer
    x = 182,269.27

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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.