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Finding the Fourth Proportional to 253,218.32, 349,435.32 and 140,038.64

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Solution

The fourth proportional to 253,218.32, 349,435.32 and 140,038.64 is: 193,250.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,218.32 : 349,435.32 = 140,038.64 : x
  2. Step 2: Convert to fraction form
    253,218.32/349,435.32 = 140,038.64/x
  3. Step 3: Cross multiply
    253,218.32x = 349,435.32 × 140,038.64
  4. Step 4: Simplify right side
    253,218.32x = 48,934,446,980.76
  5. Step 5: Solve for x
    x = 48,934,446,980.76/253,218.32
  6. Step 6: Final answer
    x = 193,250.03

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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.