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Finding the Fourth Proportional to 210,007.30, 315,010.95 and 157,519.30

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Solution

The fourth proportional to 210,007.30, 315,010.95 and 157,519.30 is: 236,278.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,007.30 : 315,010.95 = 157,519.30 : x
  2. Step 2: Convert to fraction form
    210,007.30/315,010.95 = 157,519.30/x
  3. Step 3: Cross multiply
    210,007.30x = 315,010.95 × 157,519.30
  4. Step 4: Simplify right side
    210,007.30x = 49,620,304,336.34
  5. Step 5: Solve for x
    x = 49,620,304,336.34/210,007.30
  6. Step 6: Final answer
    x = 236,278.95

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1.5x scale

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.