Home / 460,931.60-691,397.40-145,420.40

Finding the Fourth Proportional to 460,931.60, 691,397.40 and 145,420.40

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Solution

The fourth proportional to 460,931.60, 691,397.40 and 145,420.40 is: 218,130.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    460,931.60 : 691,397.40 = 145,420.40 : x
  2. Step 2: Convert to fraction form
    460,931.60/691,397.40 = 145,420.40/x
  3. Step 3: Cross multiply
    460,931.60x = 691,397.40 × 145,420.40
  4. Step 4: Simplify right side
    460,931.60x = 100,543,286,466.96
  5. Step 5: Solve for x
    x = 100,543,286,466.96/460,931.60
  6. Step 6: Final answer
    x = 218,130.60

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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.