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Finding the Fourth Proportional to 253,957.86, 380,602.53 and 141,690.90

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Solution

The fourth proportional to 253,957.86, 380,602.53 and 141,690.90 is: 212,349.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,957.86 : 380,602.53 = 141,690.90 : x
  2. Step 2: Convert to fraction form
    253,957.86/380,602.53 = 141,690.90/x
  3. Step 3: Cross multiply
    253,957.86x = 380,602.53 × 141,690.90
  4. Step 4: Simplify right side
    253,957.86x = 53,927,915,017.98
  5. Step 5: Solve for x
    x = 53,927,915,017.98/253,957.86
  6. Step 6: Final answer
    x = 212,349.86

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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.