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Finding the Fourth Proportional to 358,778, 495,113.64 and 207,962.48

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Solution

The fourth proportional to 358,778, 495,113.64 and 207,962.48 is: 286,988.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,778 : 495,113.64 = 207,962.48 : x
  2. Step 2: Convert to fraction form
    358,778/495,113.64 = 207,962.48/x
  3. Step 3: Cross multiply
    358,778x = 495,113.64 × 207,962.48
  4. Step 4: Simplify right side
    358,778x = 102,965,060,456.23
  5. Step 5: Solve for x
    x = 102,965,060,456.23/358,778
  6. Step 6: Final answer
    x = 286,988.22

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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.