Home / 354,210.60-531,315.90-143,999.40

Finding the Fourth Proportional to 354,210.60, 531,315.90 and 143,999.40

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Solution

The fourth proportional to 354,210.60, 531,315.90 and 143,999.40 is: 215,999.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,210.60 : 531,315.90 = 143,999.40 : x
  2. Step 2: Convert to fraction form
    354,210.60/531,315.90 = 143,999.40/x
  3. Step 3: Cross multiply
    354,210.60x = 531,315.90 × 143,999.40
  4. Step 4: Simplify right side
    354,210.60x = 76,509,170,810.46
  5. Step 5: Solve for x
    x = 76,509,170,810.46/354,210.60
  6. Step 6: Final answer
    x = 215,999.10

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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.