Home / 309,928.48-427,216.08-202,444.72

Finding the Fourth Proportional to 309,928.48, 427,216.08 and 202,444.72

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Solution

The fourth proportional to 309,928.48, 427,216.08 and 202,444.72 is: 279,056.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,928.48 : 427,216.08 = 202,444.72 : x
  2. Step 2: Convert to fraction form
    309,928.48/427,216.08 = 202,444.72/x
  3. Step 3: Cross multiply
    309,928.48x = 427,216.08 × 202,444.72
  4. Step 4: Simplify right side
    309,928.48x = 86,487,639,695.10
  5. Step 5: Solve for x
    x = 86,487,639,695.10/309,928.48
  6. Step 6: Final answer
    x = 279,056.77

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1.5x scale

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.