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Finding the Fourth Proportional to 343,868.40, 515,802.60 and 314,319.60

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Solution

The fourth proportional to 343,868.40, 515,802.60 and 314,319.60 is: 471,479.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,868.40 : 515,802.60 = 314,319.60 : x
  2. Step 2: Convert to fraction form
    343,868.40/515,802.60 = 314,319.60/x
  3. Step 3: Cross multiply
    343,868.40x = 515,802.60 × 314,319.60
  4. Step 4: Simplify right side
    343,868.40x = 162,126,866,910.96
  5. Step 5: Solve for x
    x = 162,126,866,910.96/343,868.40
  6. Step 6: Final answer
    x = 471,479.40

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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.