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Finding the Fourth Proportional to 342,718.74, 513,979.47 and 118,070.10

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Solution

The fourth proportional to 342,718.74, 513,979.47 and 118,070.10 is: 177,071.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,718.74 : 513,979.47 = 118,070.10 : x
  2. Step 2: Convert to fraction form
    342,718.74/513,979.47 = 118,070.10/x
  3. Step 3: Cross multiply
    342,718.74x = 513,979.47 × 118,070.10
  4. Step 4: Simplify right side
    342,718.74x = 60,685,607,420.85
  5. Step 5: Solve for x
    x = 60,685,607,420.85/342,718.74
  6. Step 6: Final answer
    x = 177,071.17

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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.