Home / 287,975.30-432,014.20-98,456.72

Finding the Fourth Proportional to 287,975.30, 432,014.20 and 98,456.72

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Solution

The fourth proportional to 287,975.30, 432,014.20 and 98,456.72 is: 147,702.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,975.30 : 432,014.20 = 98,456.72 : x
  2. Step 2: Convert to fraction form
    287,975.30/432,014.20 = 98,456.72/x
  3. Step 3: Cross multiply
    287,975.30x = 432,014.20 × 98,456.72
  4. Step 4: Simplify right side
    287,975.30x = 42,534,698,719.21
  5. Step 5: Solve for x
    x = 42,534,698,719.21/287,975.30
  6. Step 6: Final answer
    x = 147,702.60

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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.