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Finding the Fourth Proportional to 351,031.60, 526,547.40 and 126,645.40

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Solution

The fourth proportional to 351,031.60, 526,547.40 and 126,645.40 is: 189,968.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,031.60 : 526,547.40 = 126,645.40 : x
  2. Step 2: Convert to fraction form
    351,031.60/526,547.40 = 126,645.40/x
  3. Step 3: Cross multiply
    351,031.60x = 526,547.40 × 126,645.40
  4. Step 4: Simplify right side
    351,031.60x = 66,684,806,091.96
  5. Step 5: Solve for x
    x = 66,684,806,091.96/351,031.60
  6. Step 6: Final answer
    x = 189,968.10

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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.