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Finding the Fourth Proportional to 285,127.72, 393,482.82 and 157,808.68

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Solution

The fourth proportional to 285,127.72, 393,482.82 and 157,808.68 is: 217,779.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,127.72 : 393,482.82 = 157,808.68 : x
  2. Step 2: Convert to fraction form
    285,127.72/393,482.82 = 157,808.68/x
  3. Step 3: Cross multiply
    285,127.72x = 393,482.82 × 157,808.68
  4. Step 4: Simplify right side
    285,127.72x = 62,095,004,426.88
  5. Step 5: Solve for x
    x = 62,095,004,426.88/285,127.72
  6. Step 6: Final answer
    x = 217,779.61

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1.5x scale

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.