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Finding the Fourth Proportional to 290,005.92, 434,925.36 and 79,650.72

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Solution

The fourth proportional to 290,005.92, 434,925.36 and 79,650.72 is: 119,453.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,005.92 : 434,925.36 = 79,650.72 : x
  2. Step 2: Convert to fraction form
    290,005.92/434,925.36 = 79,650.72/x
  3. Step 3: Cross multiply
    290,005.92x = 434,925.36 × 79,650.72
  4. Step 4: Simplify right side
    290,005.92x = 34,642,118,070.26
  5. Step 5: Solve for x
    x = 34,642,118,070.26/290,005.92
  6. Step 6: Final answer
    x = 119,453.14

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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.