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Finding the Fourth Proportional to 286,885.54, 429,995.70 and 253,670.50

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Solution

The fourth proportional to 286,885.54, 429,995.70 and 253,670.50 is: 380,211.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,885.54 : 429,995.70 = 253,670.50 : x
  2. Step 2: Convert to fraction form
    286,885.54/429,995.70 = 253,670.50/x
  3. Step 3: Cross multiply
    286,885.54x = 429,995.70 × 253,670.50
  4. Step 4: Simplify right side
    286,885.54x = 109,077,224,216.85
  5. Step 5: Solve for x
    x = 109,077,224,216.85/286,885.54
  6. Step 6: Final answer
    x = 380,211.65

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1.5x scale

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.