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Finding the Fourth Proportional to 358,721.91, 495,058.70 and 197,576.90

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Solution

The fourth proportional to 358,721.91, 495,058.70 and 197,576.90 is: 272,668.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,721.91 : 495,058.70 = 197,576.90 : x
  2. Step 2: Convert to fraction form
    358,721.91/495,058.70 = 197,576.90/x
  3. Step 3: Cross multiply
    358,721.91x = 495,058.70 × 197,576.90
  4. Step 4: Simplify right side
    358,721.91x = 97,812,159,800.85
  5. Step 5: Solve for x
    x = 97,812,159,800.85/358,721.91
  6. Step 6: Final answer
    x = 272,668.49

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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.