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Finding the Fourth Proportional to 371,965.72, 513,323.30 and 226,779.90

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Solution

The fourth proportional to 371,965.72, 513,323.30 and 226,779.90 is: 312,962.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,965.72 : 513,323.30 = 226,779.90 : x
  2. Step 2: Convert to fraction form
    371,965.72/513,323.30 = 226,779.90/x
  3. Step 3: Cross multiply
    371,965.72x = 513,323.30 × 226,779.90
  4. Step 4: Simplify right side
    371,965.72x = 116,411,407,533.28
  5. Step 5: Solve for x
    x = 116,411,407,533.28/371,965.72
  6. Step 6: Final answer
    x = 312,962.73

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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.