Home / 346,755.29-478,387.13-217,618.40

Finding the Fourth Proportional to 346,755.29, 478,387.13 and 217,618.40

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Solution

The fourth proportional to 346,755.29, 478,387.13 and 217,618.40 is: 300,228.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,755.29 : 478,387.13 = 217,618.40 : x
  2. Step 2: Convert to fraction form
    346,755.29/478,387.13 = 217,618.40/x
  3. Step 3: Cross multiply
    346,755.29x = 478,387.13 × 217,618.40
  4. Step 4: Simplify right side
    346,755.29x = 104,105,840,723.10
  5. Step 5: Solve for x
    x = 104,105,840,723.10/346,755.29
  6. Step 6: Final answer
    x = 300,228.56

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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.