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Finding the Fourth Proportional to 341,746.40, 513,040.80 and 215,386.40

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Solution

The fourth proportional to 341,746.40, 513,040.80 and 215,386.40 is: 323,345.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    341,746.40 : 513,040.80 = 215,386.40 : x
  2. Step 2: Convert to fraction form
    341,746.40/513,040.80 = 215,386.40/x
  3. Step 3: Cross multiply
    341,746.40x = 513,040.80 × 215,386.40
  4. Step 4: Simplify right side
    341,746.40x = 110,502,010,965.12
  5. Step 5: Solve for x
    x = 110,502,010,965.12/341,746.40
  6. Step 6: Final answer
    x = 323,345.06

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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.