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Finding the Fourth Proportional to 555,066.18, 766,139.22 and 313,490.16

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Solution

The fourth proportional to 555,066.18, 766,139.22 and 313,490.16 is: 432,699.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,066.18 : 766,139.22 = 313,490.16 : x
  2. Step 2: Convert to fraction form
    555,066.18/766,139.22 = 313,490.16/x
  3. Step 3: Cross multiply
    555,066.18x = 766,139.22 × 313,490.16
  4. Step 4: Simplify right side
    555,066.18x = 240,177,106,660.08
  5. Step 5: Solve for x
    x = 240,177,106,660.08/555,066.18
  6. Step 6: Final answer
    x = 432,699.95

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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.