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Finding the Fourth Proportional to 480,178.32, 662,651.92 and 265,316.40

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Solution

The fourth proportional to 480,178.32, 662,651.92 and 265,316.40 is: 366,139.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,178.32 : 662,651.92 = 265,316.40 : x
  2. Step 2: Convert to fraction form
    480,178.32/662,651.92 = 265,316.40/x
  3. Step 3: Cross multiply
    480,178.32x = 662,651.92 × 265,316.40
  4. Step 4: Simplify right side
    480,178.32x = 175,812,421,867.49
  5. Step 5: Solve for x
    x = 175,812,421,867.49/480,178.32
  6. Step 6: Final answer
    x = 366,139.86

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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.