Home / 289,771.20-434,073.60-164,966.40

Finding the Fourth Proportional to 289,771.20, 434,073.60 and 164,966.40

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Solution

The fourth proportional to 289,771.20, 434,073.60 and 164,966.40 is: 247,117.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,771.20 : 434,073.60 = 164,966.40 : x
  2. Step 2: Convert to fraction form
    289,771.20/434,073.60 = 164,966.40/x
  3. Step 3: Cross multiply
    289,771.20x = 434,073.60 × 164,966.40
  4. Step 4: Simplify right side
    289,771.20x = 71,607,559,127.04
  5. Step 5: Solve for x
    x = 71,607,559,127.04/289,771.20
  6. Step 6: Final answer
    x = 247,117.58

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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.