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Finding the Fourth Proportional to 371,115.60, 556,430.40 and 146,340.60

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Solution

The fourth proportional to 371,115.60, 556,430.40 and 146,340.60 is: 219,415.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,115.60 : 556,430.40 = 146,340.60 : x
  2. Step 2: Convert to fraction form
    371,115.60/556,430.40 = 146,340.60/x
  3. Step 3: Cross multiply
    371,115.60x = 556,430.40 × 146,340.60
  4. Step 4: Simplify right side
    371,115.60x = 81,428,358,594.24
  5. Step 5: Solve for x
    x = 81,428,358,594.24/371,115.60
  6. Step 6: Final answer
    x = 219,415.08

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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.