Home / 280,631.66-421,113.56-103,263.21

Finding the Fourth Proportional to 280,631.66, 421,113.56 and 103,263.21

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Solution

The fourth proportional to 280,631.66, 421,113.56 and 103,263.21 is: 154,955.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,631.66 : 421,113.56 = 103,263.21 : x
  2. Step 2: Convert to fraction form
    280,631.66/421,113.56 = 103,263.21/x
  3. Step 3: Cross multiply
    280,631.66x = 421,113.56 × 103,263.21
  4. Step 4: Simplify right side
    280,631.66x = 43,485,537,463.81
  5. Step 5: Solve for x
    x = 43,485,537,463.81/280,631.66
  6. Step 6: Final answer
    x = 154,955.92

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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.