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Finding the Fourth Proportional to 409,312.80, 564,562.80 and 239,580.72

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Solution

The fourth proportional to 409,312.80, 564,562.80 and 239,580.72 is: 330,452.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    409,312.80 : 564,562.80 = 239,580.72 : x
  2. Step 2: Convert to fraction form
    409,312.80/564,562.80 = 239,580.72/x
  3. Step 3: Cross multiply
    409,312.80x = 564,562.80 × 239,580.72
  4. Step 4: Simplify right side
    409,312.80x = 135,258,362,109.22
  5. Step 5: Solve for x
    x = 135,258,362,109.22/409,312.80
  6. Step 6: Final answer
    x = 330,452.31

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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.