Home / 289,712,448.60-434,568,672.90-221,688,000.60

Finding the Fourth Proportional to 289,712,448.60, 434,568,672.90 and 221,688,000.60

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Solution

The fourth proportional to 289,712,448.60, 434,568,672.90 and 221,688,000.60 is: 332,532,000.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,712,448.60 : 434,568,672.90 = 221,688,000.60 : x
  2. Step 2: Convert to fraction form
    289,712,448.60/434,568,672.90 = 221,688,000.60/x
  3. Step 3: Cross multiply
    289,712,448.60x = 434,568,672.90 × 221,688,000.60
  4. Step 4: Simplify right side
    289,712,448.60x = 96,338,660,218,596,400
  5. Step 5: Solve for x
    x = 96,338,660,218,596,400/289,712,448.60
  6. Step 6: Final answer
    x = 332,532,000.90

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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.