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Finding the Fourth Proportional to 313,663.68, 432,854.72 and 170,422.56

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Solution

The fourth proportional to 313,663.68, 432,854.72 and 170,422.56 is: 235,182.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,663.68 : 432,854.72 = 170,422.56 : x
  2. Step 2: Convert to fraction form
    313,663.68/432,854.72 = 170,422.56/x
  3. Step 3: Cross multiply
    313,663.68x = 432,854.72 × 170,422.56
  4. Step 4: Simplify right side
    313,663.68x = 73,768,209,490.48
  5. Step 5: Solve for x
    x = 73,768,209,490.48/313,663.68
  6. Step 6: Final answer
    x = 235,182.50

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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.