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Finding the Fourth Proportional to 287,254.60, 430,881.90 and 162,838.60

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Solution

The fourth proportional to 287,254.60, 430,881.90 and 162,838.60 is: 244,257.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,254.60 : 430,881.90 = 162,838.60 : x
  2. Step 2: Convert to fraction form
    287,254.60/430,881.90 = 162,838.60/x
  3. Step 3: Cross multiply
    287,254.60x = 430,881.90 × 162,838.60
  4. Step 4: Simplify right side
    287,254.60x = 70,164,205,361.34
  5. Step 5: Solve for x
    x = 70,164,205,361.34/287,254.60
  6. Step 6: Final answer
    x = 244,257.90

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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.