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Finding the Fourth Proportional to 657,988.76, 987,019.19 and 208,677.10

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Solution

The fourth proportional to 657,988.76, 987,019.19 and 208,677.10 is: 313,027.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,988.76 : 987,019.19 = 208,677.10 : x
  2. Step 2: Convert to fraction form
    657,988.76/987,019.19 = 208,677.10/x
  3. Step 3: Cross multiply
    657,988.76x = 987,019.19 × 208,677.10
  4. Step 4: Simplify right side
    657,988.76x = 205,968,302,213.55
  5. Step 5: Solve for x
    x = 205,968,302,213.55/657,988.76
  6. Step 6: Final answer
    x = 313,027.08

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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.