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Finding the Fourth Proportional to 318,480.40, 477,643.74 and 93,779.74

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Solution

The fourth proportional to 318,480.40, 477,643.74 and 93,779.74 is: 140,646.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,480.40 : 477,643.74 = 93,779.74 : x
  2. Step 2: Convert to fraction form
    318,480.40/477,643.74 = 93,779.74/x
  3. Step 3: Cross multiply
    318,480.40x = 477,643.74 × 93,779.74
  4. Step 4: Simplify right side
    318,480.40x = 44,793,305,749.83
  5. Step 5: Solve for x
    x = 44,793,305,749.83/318,480.40
  6. Step 6: Final answer
    x = 140,646.98

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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.