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Finding the Fourth Proportional to 480,612.65, 720,968.28 and 181,345.05

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Solution

The fourth proportional to 480,612.65, 720,968.28 and 181,345.05 is: 272,036.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,612.65 : 720,968.28 = 181,345.05 : x
  2. Step 2: Convert to fraction form
    480,612.65/720,968.28 = 181,345.05/x
  3. Step 3: Cross multiply
    480,612.65x = 720,968.28 × 181,345.05
  4. Step 4: Simplify right side
    480,612.65x = 130,744,028,785.01
  5. Step 5: Solve for x
    x = 130,744,028,785.01/480,612.65
  6. Step 6: Final answer
    x = 272,036.18

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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.