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Finding the Fourth Proportional to 369,349.76, 509,387.40 and 254,811.10

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Solution

The fourth proportional to 369,349.76, 509,387.40 and 254,811.10 is: 351,421.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,349.76 : 509,387.40 = 254,811.10 : x
  2. Step 2: Convert to fraction form
    369,349.76/509,387.40 = 254,811.10/x
  3. Step 3: Cross multiply
    369,349.76x = 509,387.40 × 254,811.10
  4. Step 4: Simplify right side
    369,349.76x = 129,797,563,720.14
  5. Step 5: Solve for x
    x = 129,797,563,720.14/369,349.76
  6. Step 6: Final answer
    x = 351,421.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.