Home / 319,327.08-478,851.51-91,572.45

Finding the Fourth Proportional to 319,327.08, 478,851.51 and 91,572.45

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Solution

The fourth proportional to 319,327.08, 478,851.51 and 91,572.45 is: 137,318.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,327.08 : 478,851.51 = 91,572.45 : x
  2. Step 2: Convert to fraction form
    319,327.08/478,851.51 = 91,572.45/x
  3. Step 3: Cross multiply
    319,327.08x = 478,851.51 × 91,572.45
  4. Step 4: Simplify right side
    319,327.08x = 43,849,605,956.90
  5. Step 5: Solve for x
    x = 43,849,605,956.90/319,327.08
  6. Step 6: Final answer
    x = 137,318.78

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1.5x scale

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.