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Finding the Fourth Proportional to 282,812.01, 390,275.33 and 155,484.87

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Solution

The fourth proportional to 282,812.01, 390,275.33 and 155,484.87 is: 214,566.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,812.01 : 390,275.33 = 155,484.87 : x
  2. Step 2: Convert to fraction form
    282,812.01/390,275.33 = 155,484.87/x
  3. Step 3: Cross multiply
    282,812.01x = 390,275.33 × 155,484.87
  4. Step 4: Simplify right side
    282,812.01x = 60,681,908,171.83
  5. Step 5: Solve for x
    x = 60,681,908,171.83/282,812.01
  6. Step 6: Final answer
    x = 214,566.23

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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.