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Finding the Fourth Proportional to 340,395.47, 469,808.73 and 197,155.47

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Solution

The fourth proportional to 340,395.47, 469,808.73 and 197,155.47 is: 272,111.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,395.47 : 469,808.73 = 197,155.47 : x
  2. Step 2: Convert to fraction form
    340,395.47/469,808.73 = 197,155.47/x
  3. Step 3: Cross multiply
    340,395.47x = 469,808.73 × 197,155.47
  4. Step 4: Simplify right side
    340,395.47x = 92,625,360,973.25
  5. Step 5: Solve for x
    x = 92,625,360,973.25/340,395.47
  6. Step 6: Final answer
    x = 272,111.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.