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Finding the Fourth Proportional to 372,397.65, 512,929.83 and 286,191.69

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Solution

The fourth proportional to 372,397.65, 512,929.83 and 286,191.69 is: 394,192.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,397.65 : 512,929.83 = 286,191.69 : x
  2. Step 2: Convert to fraction form
    372,397.65/512,929.83 = 286,191.69/x
  3. Step 3: Cross multiply
    372,397.65x = 512,929.83 × 286,191.69
  4. Step 4: Simplify right side
    372,397.65x = 146,796,256,448.01
  5. Step 5: Solve for x
    x = 146,796,256,448.01/372,397.65
  6. Step 6: Final answer
    x = 394,192.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.