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Finding the Fourth Proportional to 480,038.72, 720,055.46 and 195,728.16

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Solution

The fourth proportional to 480,038.72, 720,055.46 and 195,728.16 is: 293,591.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,038.72 : 720,055.46 = 195,728.16 : x
  2. Step 2: Convert to fraction form
    480,038.72/720,055.46 = 195,728.16/x
  3. Step 3: Cross multiply
    480,038.72x = 720,055.46 × 195,728.16
  4. Step 4: Simplify right side
    480,038.72x = 140,935,130,283.75
  5. Step 5: Solve for x
    x = 140,935,130,283.75/480,038.72
  6. Step 6: Final answer
    x = 293,591.17

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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.