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Finding the Fourth Proportional to 264,312.79, 396,510.50 and 86,779.42

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Solution

The fourth proportional to 264,312.79, 396,510.50 and 86,779.42 is: 130,182.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    264,312.79 : 396,510.50 = 86,779.42 : x
  2. Step 2: Convert to fraction form
    264,312.79/396,510.50 = 86,779.42/x
  3. Step 3: Cross multiply
    264,312.79x = 396,510.50 × 86,779.42
  4. Step 4: Simplify right side
    264,312.79x = 34,408,951,213.91
  5. Step 5: Solve for x
    x = 34,408,951,213.91/264,312.79
  6. Step 6: Final answer
    x = 130,182.69

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1.5x scale

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.