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Finding the Fourth Proportional to 495,217.77, 742,728.21 and 242,389.63

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Solution

The fourth proportional to 495,217.77, 742,728.21 and 242,389.63 is: 363,536.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    495,217.77 : 742,728.21 = 242,389.63 : x
  2. Step 2: Convert to fraction form
    495,217.77/742,728.21 = 242,389.63/x
  3. Step 3: Cross multiply
    495,217.77x = 742,728.21 × 242,389.63
  4. Step 4: Simplify right side
    495,217.77x = 180,029,616,012.46
  5. Step 5: Solve for x
    x = 180,029,616,012.46/495,217.77
  6. Step 6: Final answer
    x = 363,536.26

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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.