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Finding the Fourth Proportional to 352,463.40, 528,695.10 and 103,145.40

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Solution

The fourth proportional to 352,463.40, 528,695.10 and 103,145.40 is: 154,718.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,463.40 : 528,695.10 = 103,145.40 : x
  2. Step 2: Convert to fraction form
    352,463.40/528,695.10 = 103,145.40/x
  3. Step 3: Cross multiply
    352,463.40x = 528,695.10 × 103,145.40
  4. Step 4: Simplify right side
    352,463.40x = 54,532,467,567.54
  5. Step 5: Solve for x
    x = 54,532,467,567.54/352,463.40
  6. Step 6: Final answer
    x = 154,718.10

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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.