Home / 315,340.20-473,010.30-289,535.40

Finding the Fourth Proportional to 315,340.20, 473,010.30 and 289,535.40

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Solution

The fourth proportional to 315,340.20, 473,010.30 and 289,535.40 is: 434,303.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,340.20 : 473,010.30 = 289,535.40 : x
  2. Step 2: Convert to fraction form
    315,340.20/473,010.30 = 289,535.40/x
  3. Step 3: Cross multiply
    315,340.20x = 473,010.30 × 289,535.40
  4. Step 4: Simplify right side
    315,340.20x = 136,953,226,414.62
  5. Step 5: Solve for x
    x = 136,953,226,414.62/315,340.20
  6. Step 6: Final answer
    x = 434,303.10

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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.