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Finding the Fourth Proportional to 282,801.30, 390,266.80 and 155,484.96

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Solution

The fourth proportional to 282,801.30, 390,266.80 and 155,484.96 is: 214,569.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,801.30 : 390,266.80 = 155,484.96 : x
  2. Step 2: Convert to fraction form
    282,801.30/390,266.80 = 155,484.96/x
  3. Step 3: Cross multiply
    282,801.30x = 390,266.80 × 155,484.96
  4. Step 4: Simplify right side
    282,801.30x = 60,680,617,787.33
  5. Step 5: Solve for x
    x = 60,680,617,787.33/282,801.30
  6. Step 6: Final answer
    x = 214,569.80

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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.