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Finding the Fourth Proportional to 371,291.55, 556,848.14 and 171,420

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Solution

The fourth proportional to 371,291.55, 556,848.14 and 171,420 is: 257,088.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,291.55 : 556,848.14 = 171,420 : x
  2. Step 2: Convert to fraction form
    371,291.55/556,848.14 = 171,420/x
  3. Step 3: Cross multiply
    371,291.55x = 556,848.14 × 171,420
  4. Step 4: Simplify right side
    371,291.55x = 95,454,907,301.70
  5. Step 5: Solve for x
    x = 95,454,907,301.70/371,291.55
  6. Step 6: Final answer
    x = 257,088.82

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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.