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Finding the Fourth Proportional to 310,542.61, 428,519.01 and 174,545.23

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Solution

The fourth proportional to 310,542.61, 428,519.01 and 174,545.23 is: 240,855.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,542.61 : 428,519.01 = 174,545.23 : x
  2. Step 2: Convert to fraction form
    310,542.61/428,519.01 = 174,545.23/x
  3. Step 3: Cross multiply
    310,542.61x = 428,519.01 × 174,545.23
  4. Step 4: Simplify right side
    310,542.61x = 74,795,949,159.82
  5. Step 5: Solve for x
    x = 74,795,949,159.82/310,542.61
  6. Step 6: Final answer
    x = 240,855.67

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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.