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Finding the Fourth Proportional to 460,136.40, 690,068.40 and 207,270.72

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Solution

The fourth proportional to 460,136.40, 690,068.40 and 207,270.72 is: 310,844.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    460,136.40 : 690,068.40 = 207,270.72 : x
  2. Step 2: Convert to fraction form
    460,136.40/690,068.40 = 207,270.72/x
  3. Step 3: Cross multiply
    460,136.40x = 690,068.40 × 207,270.72
  4. Step 4: Simplify right side
    460,136.40x = 143,030,974,117.25
  5. Step 5: Solve for x
    x = 143,030,974,117.25/460,136.40
  6. Step 6: Final answer
    x = 310,844.73

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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.