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Finding the Fourth Proportional to 290,347.92, 435,549.40 and 112,868.64

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Solution

The fourth proportional to 290,347.92, 435,549.40 and 112,868.64 is: 169,313.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,347.92 : 435,549.40 = 112,868.64 : x
  2. Step 2: Convert to fraction form
    290,347.92/435,549.40 = 112,868.64/x
  3. Step 3: Cross multiply
    290,347.92x = 435,549.40 × 112,868.64
  4. Step 4: Simplify right side
    290,347.92x = 49,159,868,430.82
  5. Step 5: Solve for x
    x = 49,159,868,430.82/290,347.92
  6. Step 6: Final answer
    x = 169,313.66

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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.