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Finding the Fourth Proportional to 391,666.16, 540,493.08 and 230,502.08

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Solution

The fourth proportional to 391,666.16, 540,493.08 and 230,502.08 is: 318,089.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,666.16 : 540,493.08 = 230,502.08 : x
  2. Step 2: Convert to fraction form
    391,666.16/540,493.08 = 230,502.08/x
  3. Step 3: Cross multiply
    391,666.16x = 540,493.08 × 230,502.08
  4. Step 4: Simplify right side
    391,666.16x = 124,584,779,165.61
  5. Step 5: Solve for x
    x = 124,584,779,165.61/391,666.16
  6. Step 6: Final answer
    x = 318,089.21

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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.