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Finding the Fourth Proportional to 315,679.40, 473,000.70 and 262,802.60

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Solution

The fourth proportional to 315,679.40, 473,000.70 and 262,802.60 is: 393,772.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,679.40 : 473,000.70 = 262,802.60 : x
  2. Step 2: Convert to fraction form
    315,679.40/473,000.70 = 262,802.60/x
  3. Step 3: Cross multiply
    315,679.40x = 473,000.70 × 262,802.60
  4. Step 4: Simplify right side
    315,679.40x = 124,305,813,761.82
  5. Step 5: Solve for x
    x = 124,305,813,761.82/315,679.40
  6. Step 6: Final answer
    x = 393,772.33

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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.