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Finding the Fourth Proportional to 289,613.40, 434,420.10 and 245,873.40

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Solution

The fourth proportional to 289,613.40, 434,420.10 and 245,873.40 is: 368,810.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,613.40 : 434,420.10 = 245,873.40 : x
  2. Step 2: Convert to fraction form
    289,613.40/434,420.10 = 245,873.40/x
  3. Step 3: Cross multiply
    289,613.40x = 434,420.10 × 245,873.40
  4. Step 4: Simplify right side
    289,613.40x = 106,812,347,015.34
  5. Step 5: Solve for x
    x = 106,812,347,015.34/289,613.40
  6. Step 6: Final answer
    x = 368,810.10

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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.