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Finding the Fourth Proportional to 346,442.40, 485,719.20 and 346,442.40

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Solution

The fourth proportional to 346,442.40, 485,719.20 and 346,442.40 is: 485,719.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,442.40 : 485,719.20 = 346,442.40 : x
  2. Step 2: Convert to fraction form
    346,442.40/485,719.20 = 346,442.40/x
  3. Step 3: Cross multiply
    346,442.40x = 485,719.20 × 346,442.40
  4. Step 4: Simplify right side
    346,442.40x = 168,273,725,374.08
  5. Step 5: Solve for x
    x = 168,273,725,374.08/346,442.40
  6. Step 6: Final answer
    x = 485,719.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.