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Finding the Fourth Proportional to 370,975.30, 556,430.55 and 121,657.30

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Solution

The fourth proportional to 370,975.30, 556,430.55 and 121,657.30 is: 182,475.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,975.30 : 556,430.55 = 121,657.30 : x
  2. Step 2: Convert to fraction form
    370,975.30/556,430.55 = 121,657.30/x
  3. Step 3: Cross multiply
    370,975.30x = 556,430.55 × 121,657.30
  4. Step 4: Simplify right side
    370,975.30x = 67,693,838,350.52
  5. Step 5: Solve for x
    x = 67,693,838,350.52/370,975.30
  6. Step 6: Final answer
    x = 182,475.32

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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.