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Finding the Fourth Proportional to 345,551.90, 518,327.85 and 286,502.90

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Solution

The fourth proportional to 345,551.90, 518,327.85 and 286,502.90 is: 429,754.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,551.90 : 518,327.85 = 286,502.90 : x
  2. Step 2: Convert to fraction form
    345,551.90/518,327.85 = 286,502.90/x
  3. Step 3: Cross multiply
    345,551.90x = 518,327.85 × 286,502.90
  4. Step 4: Simplify right side
    345,551.90x = 148,502,432,175.77
  5. Step 5: Solve for x
    x = 148,502,432,175.77/345,551.90
  6. Step 6: Final answer
    x = 429,754.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.