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Finding the Fourth Proportional to 230,315.88, 345,408.20 and 145,948.72

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Solution

The fourth proportional to 230,315.88, 345,408.20 and 145,948.72 is: 218,881.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,315.88 : 345,408.20 = 145,948.72 : x
  2. Step 2: Convert to fraction form
    230,315.88/345,408.20 = 145,948.72/x
  3. Step 3: Cross multiply
    230,315.88x = 345,408.20 × 145,948.72
  4. Step 4: Simplify right side
    230,315.88x = 50,411,884,667.50
  5. Step 5: Solve for x
    x = 50,411,884,667.50/230,315.88
  6. Step 6: Final answer
    x = 218,881.50

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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.