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Finding the Fourth Proportional to 370,153.99, 555,144.72 and 103,940.20

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Solution

The fourth proportional to 370,153.99, 555,144.72 and 103,940.20 is: 155,886.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,153.99 : 555,144.72 = 103,940.20 : x
  2. Step 2: Convert to fraction form
    370,153.99/555,144.72 = 103,940.20/x
  3. Step 3: Cross multiply
    370,153.99x = 555,144.72 × 103,940.20
  4. Step 4: Simplify right side
    370,153.99x = 57,701,853,225.74
  5. Step 5: Solve for x
    x = 57,701,853,225.74/370,153.99
  6. Step 6: Final answer
    x = 155,886.08

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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.