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Finding the Fourth Proportional to 485,411.16, 669,870.51 and 270,564.85

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Solution

The fourth proportional to 485,411.16, 669,870.51 and 270,564.85 is: 373,381.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,411.16 : 669,870.51 = 270,564.85 : x
  2. Step 2: Convert to fraction form
    485,411.16/669,870.51 = 270,564.85/x
  3. Step 3: Cross multiply
    485,411.16x = 669,870.51 × 270,564.85
  4. Step 4: Simplify right side
    485,411.16x = 181,243,414,057.57
  5. Step 5: Solve for x
    x = 181,243,414,057.57/485,411.16
  6. Step 6: Final answer
    x = 373,381.23

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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.