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Finding the Fourth Proportional to 375,779.12, 518,581.88 and 203,702.72

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Solution

The fourth proportional to 375,779.12, 518,581.88 and 203,702.72 is: 281,113.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    375,779.12 : 518,581.88 = 203,702.72 : x
  2. Step 2: Convert to fraction form
    375,779.12/518,581.88 = 203,702.72/x
  3. Step 3: Cross multiply
    375,779.12x = 518,581.88 × 203,702.72
  4. Step 4: Simplify right side
    375,779.12x = 105,636,539,498.71
  5. Step 5: Solve for x
    x = 105,636,539,498.71/375,779.12
  6. Step 6: Final answer
    x = 281,113.38

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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.