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Finding the Fourth Proportional to 282,609.95, 390,001.64 and 155,293.74

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Solution

The fourth proportional to 282,609.95, 390,001.64 and 155,293.74 is: 214,305.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,609.95 : 390,001.64 = 155,293.74 : x
  2. Step 2: Convert to fraction form
    282,609.95/390,001.64 = 155,293.74/x
  3. Step 3: Cross multiply
    282,609.95x = 390,001.64 × 155,293.74
  4. Step 4: Simplify right side
    282,609.95x = 60,564,812,505.26
  5. Step 5: Solve for x
    x = 60,564,812,505.26/282,609.95
  6. Step 6: Final answer
    x = 214,305.31

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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.