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Finding the Fourth Proportional to 282,800.79, 390,266.10 and 155,484.45

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Solution

The fourth proportional to 282,800.79, 390,266.10 and 155,484.45 is: 214,569.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,800.79 : 390,266.10 = 155,484.45 : x
  2. Step 2: Convert to fraction form
    282,800.79/390,266.10 = 155,484.45/x
  3. Step 3: Cross multiply
    282,800.79x = 390,266.10 × 155,484.45
  4. Step 4: Simplify right side
    282,800.79x = 60,680,309,912.15
  5. Step 5: Solve for x
    x = 60,680,309,912.15/282,800.79
  6. Step 6: Final answer
    x = 214,569.10

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1.5x scale

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.