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Finding the Fourth Proportional to 485,870.13, 670,501.80 and 271,004.67

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Solution

The fourth proportional to 485,870.13, 670,501.80 and 271,004.67 is: 373,987.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,870.13 : 670,501.80 = 271,004.67 : x
  2. Step 2: Convert to fraction form
    485,870.13/670,501.80 = 271,004.67/x
  3. Step 3: Cross multiply
    485,870.13x = 670,501.80 × 271,004.67
  4. Step 4: Simplify right side
    485,870.13x = 181,709,119,043.41
  5. Step 5: Solve for x
    x = 181,709,119,043.41/485,870.13
  6. Step 6: Final answer
    x = 373,987.01

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.