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Finding the Fourth Proportional to 190,915.80, 286,373.70 and 146,765.40

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Solution

The fourth proportional to 190,915.80, 286,373.70 and 146,765.40 is: 220,148.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,915.80 : 286,373.70 = 146,765.40 : x
  2. Step 2: Convert to fraction form
    190,915.80/286,373.70 = 146,765.40/x
  3. Step 3: Cross multiply
    190,915.80x = 286,373.70 × 146,765.40
  4. Step 4: Simplify right side
    190,915.80x = 42,029,750,629.98
  5. Step 5: Solve for x
    x = 42,029,750,629.98/190,915.80
  6. Step 6: Final answer
    x = 220,148.10

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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.