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Finding the Fourth Proportional to 340,689.40, 511,034.10 and 302,635.60

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Solution

The fourth proportional to 340,689.40, 511,034.10 and 302,635.60 is: 453,953.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,689.40 : 511,034.10 = 302,635.60 : x
  2. Step 2: Convert to fraction form
    340,689.40/511,034.10 = 302,635.60/x
  3. Step 3: Cross multiply
    340,689.40x = 511,034.10 × 302,635.60
  4. Step 4: Simplify right side
    340,689.40x = 154,657,111,473.96
  5. Step 5: Solve for x
    x = 154,657,111,473.96/340,689.40
  6. Step 6: Final answer
    x = 453,953.40

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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.