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Finding the Fourth Proportional to 418,907.59, 578,075.20 and 227,921.74

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Solution

The fourth proportional to 418,907.59, 578,075.20 and 227,921.74 is: 314,522.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,907.59 : 578,075.20 = 227,921.74 : x
  2. Step 2: Convert to fraction form
    418,907.59/578,075.20 = 227,921.74/x
  3. Step 3: Cross multiply
    418,907.59x = 578,075.20 × 227,921.74
  4. Step 4: Simplify right side
    418,907.59x = 131,755,905,434.85
  5. Step 5: Solve for x
    x = 131,755,905,434.85/418,907.59
  6. Step 6: Final answer
    x = 314,522.60

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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.