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Finding the Fourth Proportional to 372,411, 513,922.86 and 202,642.20

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Solution

The fourth proportional to 372,411, 513,922.86 and 202,642.20 is: 279,643.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,411 : 513,922.86 = 202,642.20 : x
  2. Step 2: Convert to fraction form
    372,411/513,922.86 = 202,642.20/x
  3. Step 3: Cross multiply
    372,411x = 513,922.86 × 202,642.20
  4. Step 4: Simplify right side
    372,411x = 104,142,458,980.69
  5. Step 5: Solve for x
    x = 104,142,458,980.69/372,411
  6. Step 6: Final answer
    x = 279,643.89

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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.