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Finding the Fourth Proportional to 495,985.76, 744,074.40 and 211,672.16

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Solution

The fourth proportional to 495,985.76, 744,074.40 and 211,672.16 is: 317,549.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    495,985.76 : 744,074.40 = 211,672.16 : x
  2. Step 2: Convert to fraction form
    495,985.76/744,074.40 = 211,672.16/x
  3. Step 3: Cross multiply
    495,985.76x = 744,074.40 × 211,672.16
  4. Step 4: Simplify right side
    495,985.76x = 157,499,835,448.70
  5. Step 5: Solve for x
    x = 157,499,835,448.70/495,985.76
  6. Step 6: Final answer
    x = 317,549.11

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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.