Home / 238,379.12-328,825.65-142,830.45

Finding the Fourth Proportional to 238,379.12, 328,825.65 and 142,830.45

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Solution

The fourth proportional to 238,379.12, 328,825.65 and 142,830.45 is: 197,023.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,379.12 : 328,825.65 = 142,830.45 : x
  2. Step 2: Convert to fraction form
    238,379.12/328,825.65 = 142,830.45/x
  3. Step 3: Cross multiply
    238,379.12x = 328,825.65 × 142,830.45
  4. Step 4: Simplify right side
    238,379.12x = 46,966,316,096.66
  5. Step 5: Solve for x
    x = 46,966,316,096.66/238,379.12
  6. Step 6: Final answer
    x = 197,023.62

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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.