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Finding the Fourth Proportional to 421,160.64, 581,202.72 and 230,176.32

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Solution

The fourth proportional to 421,160.64, 581,202.72 and 230,176.32 is: 317,643.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,160.64 : 581,202.72 = 230,176.32 : x
  2. Step 2: Convert to fraction form
    421,160.64/581,202.72 = 230,176.32/x
  3. Step 3: Cross multiply
    421,160.64x = 581,202.72 × 230,176.32
  4. Step 4: Simplify right side
    421,160.64x = 133,779,103,263.59
  5. Step 5: Solve for x
    x = 133,779,103,263.59/421,160.64
  6. Step 6: Final answer
    x = 317,643.89

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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.