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Finding the Fourth Proportional to 485,411.67, 669,871.22 and 270,565.35

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Solution

The fourth proportional to 485,411.67, 669,871.22 and 270,565.35 is: 373,381.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,411.67 : 669,871.22 = 270,565.35 : x
  2. Step 2: Convert to fraction form
    485,411.67/669,871.22 = 270,565.35/x
  3. Step 3: Cross multiply
    485,411.67x = 669,871.22 × 270,565.35
  4. Step 4: Simplify right side
    485,411.67x = 181,243,939,741.40
  5. Step 5: Solve for x
    x = 181,243,939,741.40/485,411.67
  6. Step 6: Final answer
    x = 373,381.92

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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.