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Finding the Fourth Proportional to 250,474.16, 375,734.40 and 90,590

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Solution

The fourth proportional to 250,474.16, 375,734.40 and 90,590 is: 135,893.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,474.16 : 375,734.40 = 90,590 : x
  2. Step 2: Convert to fraction form
    250,474.16/375,734.40 = 90,590/x
  3. Step 3: Cross multiply
    250,474.16x = 375,734.40 × 90,590
  4. Step 4: Simplify right side
    250,474.16x = 34,037,779,296.00
  5. Step 5: Solve for x
    x = 34,037,779,296.00/250,474.16
  6. Step 6: Final answer
    x = 135,893.38

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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.