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Finding the Fourth Proportional to 342,151.83, 513,194.76 and 105,430.95

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Solution

The fourth proportional to 342,151.83, 513,194.76 and 105,430.95 is: 158,136.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,151.83 : 513,194.76 = 105,430.95 : x
  2. Step 2: Convert to fraction form
    342,151.83/513,194.76 = 105,430.95/x
  3. Step 3: Cross multiply
    342,151.83x = 513,194.76 × 105,430.95
  4. Step 4: Simplify right side
    342,151.83x = 54,106,611,081.82
  5. Step 5: Solve for x
    x = 54,106,611,081.82/342,151.83
  6. Step 6: Final answer
    x = 158,136.26

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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.