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Finding the Fourth Proportional to 282,641.60, 423,913.80 and 105,057.20

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Solution

The fourth proportional to 282,641.60, 423,913.80 and 105,057.20 is: 157,567.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,641.60 : 423,913.80 = 105,057.20 : x
  2. Step 2: Convert to fraction form
    282,641.60/423,913.80 = 105,057.20/x
  3. Step 3: Cross multiply
    282,641.60x = 423,913.80 × 105,057.20
  4. Step 4: Simplify right side
    282,641.60x = 44,535,196,869.36
  5. Step 5: Solve for x
    x = 44,535,196,869.36/282,641.60
  6. Step 6: Final answer
    x = 157,567.74

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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.