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Finding the Fourth Proportional to 440,443.16, 660,763.18 and 140,941.72

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Solution

The fourth proportional to 440,443.16, 660,763.18 and 140,941.72 is: 211,444.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,443.16 : 660,763.18 = 140,941.72 : x
  2. Step 2: Convert to fraction form
    440,443.16/660,763.18 = 140,941.72/x
  3. Step 3: Cross multiply
    440,443.16x = 660,763.18 × 140,941.72
  4. Step 4: Simplify right side
    440,443.16x = 93,129,095,798.05
  5. Step 5: Solve for x
    x = 93,129,095,798.05/440,443.16
  6. Step 6: Final answer
    x = 211,444.08

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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.