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Finding the Fourth Proportional to 421,656.42, 581,885.82 and 230,671.20

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Solution

The fourth proportional to 421,656.42, 581,885.82 and 230,671.20 is: 318,326.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,656.42 : 581,885.82 = 230,671.20 : x
  2. Step 2: Convert to fraction form
    421,656.42/581,885.82 = 230,671.20/x
  3. Step 3: Cross multiply
    421,656.42x = 581,885.82 × 230,671.20
  4. Step 4: Simplify right side
    421,656.42x = 134,224,300,362.38
  5. Step 5: Solve for x
    x = 134,224,300,362.38/421,656.42
  6. Step 6: Final answer
    x = 318,326.23

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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.