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Finding the Fourth Proportional to 370,670, 556,009.86 and 121,352

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Solution

The fourth proportional to 370,670, 556,009.86 and 121,352 is: 182,029.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,670 : 556,009.86 = 121,352 : x
  2. Step 2: Convert to fraction form
    370,670/556,009.86 = 121,352/x
  3. Step 3: Cross multiply
    370,670x = 556,009.86 × 121,352
  4. Step 4: Simplify right side
    370,670x = 67,472,908,530.72
  5. Step 5: Solve for x
    x = 67,472,908,530.72/370,670
  6. Step 6: Final answer
    x = 182,029.59

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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.