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Finding the Fourth Proportional to 286,779.60, 430,156.80 and 87,095.52

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Solution

The fourth proportional to 286,779.60, 430,156.80 and 87,095.52 is: 130,639.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,779.60 : 430,156.80 = 87,095.52 : x
  2. Step 2: Convert to fraction form
    286,779.60/430,156.80 = 87,095.52/x
  3. Step 3: Cross multiply
    286,779.60x = 430,156.80 × 87,095.52
  4. Step 4: Simplify right side
    286,779.60x = 37,464,730,177.54
  5. Step 5: Solve for x
    x = 37,464,730,177.54/286,779.60
  6. Step 6: Final answer
    x = 130,639.45

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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.