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Finding the Fourth Proportional to 172,242.55, 258,368.68 and 47,583.55

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Solution

The fourth proportional to 172,242.55, 258,368.68 and 47,583.55 is: 71,376.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,242.55 : 258,368.68 = 47,583.55 : x
  2. Step 2: Convert to fraction form
    172,242.55/258,368.68 = 47,583.55/x
  3. Step 3: Cross multiply
    172,242.55x = 258,368.68 × 47,583.55
  4. Step 4: Simplify right side
    172,242.55x = 12,294,098,416.77
  5. Step 5: Solve for x
    x = 12,294,098,416.77/172,242.55
  6. Step 6: Final answer
    x = 71,376.66

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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.