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Finding the Fourth Proportional to 343,677.60, 515,516.40 and 338,428.80

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Solution

The fourth proportional to 343,677.60, 515,516.40 and 338,428.80 is: 507,643.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,677.60 : 515,516.40 = 338,428.80 : x
  2. Step 2: Convert to fraction form
    343,677.60/515,516.40 = 338,428.80/x
  3. Step 3: Cross multiply
    343,677.60x = 515,516.40 × 338,428.80
  4. Step 4: Simplify right side
    343,677.60x = 174,465,596,632.32
  5. Step 5: Solve for x
    x = 174,465,596,632.32/343,677.60
  6. Step 6: Final answer
    x = 507,643.20

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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.