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Finding the Fourth Proportional to 402,561.23, 603,841.45 and 103,041.32

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Solution

The fourth proportional to 402,561.23, 603,841.45 and 103,041.32 is: 154,561.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,561.23 : 603,841.45 = 103,041.32 : x
  2. Step 2: Convert to fraction form
    402,561.23/603,841.45 = 103,041.32/x
  3. Step 3: Cross multiply
    402,561.23x = 603,841.45 × 103,041.32
  4. Step 4: Simplify right side
    402,561.23x = 62,220,622,090.02
  5. Step 5: Solve for x
    x = 62,220,622,090.02/402,561.23
  6. Step 6: Final answer
    x = 154,561.89

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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.