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Finding the Fourth Proportional to 495,000.40, 742,111.80 and 273,384.40

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Solution

The fourth proportional to 495,000.40, 742,111.80 and 273,384.40 is: 409,861.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    495,000.40 : 742,111.80 = 273,384.40 : x
  2. Step 2: Convert to fraction form
    495,000.40/742,111.80 = 273,384.40/x
  3. Step 3: Cross multiply
    495,000.40x = 742,111.80 × 273,384.40
  4. Step 4: Simplify right side
    495,000.40x = 202,881,789,175.92
  5. Step 5: Solve for x
    x = 202,881,789,175.92/495,000.40
  6. Step 6: Final answer
    x = 409,861.87

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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.