Home / 305,210.06-457,661.90-145,238.30

Finding the Fourth Proportional to 305,210.06, 457,661.90 and 145,238.30

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Solution

The fourth proportional to 305,210.06, 457,661.90 and 145,238.30 is: 217,784.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,210.06 : 457,661.90 = 145,238.30 : x
  2. Step 2: Convert to fraction form
    305,210.06/457,661.90 = 145,238.30/x
  3. Step 3: Cross multiply
    305,210.06x = 457,661.90 × 145,238.30
  4. Step 4: Simplify right side
    305,210.06x = 66,470,036,330.77
  5. Step 5: Solve for x
    x = 66,470,036,330.77/305,210.06
  6. Step 6: Final answer
    x = 217,784.55

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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.