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Finding the Fourth Proportional to 402,222.11, 555,068.80 and 220,928.01

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Solution

The fourth proportional to 402,222.11, 555,068.80 and 220,928.01 is: 304,881.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,222.11 : 555,068.80 = 220,928.01 : x
  2. Step 2: Convert to fraction form
    402,222.11/555,068.80 = 220,928.01/x
  3. Step 3: Cross multiply
    402,222.11x = 555,068.80 × 220,928.01
  4. Step 4: Simplify right side
    402,222.11x = 122,630,243,591.74
  5. Step 5: Solve for x
    x = 122,630,243,591.74/402,222.11
  6. Step 6: Final answer
    x = 304,881.91

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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.