Home / 315,428.18-470,728.38-281,770.24

Finding the Fourth Proportional to 315,428.18, 470,728.38 and 281,770.24

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Solution

The fourth proportional to 315,428.18, 470,728.38 and 281,770.24 is: 420,499.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,428.18 : 470,728.38 = 281,770.24 : x
  2. Step 2: Convert to fraction form
    315,428.18/470,728.38 = 281,770.24/x
  3. Step 3: Cross multiply
    315,428.18x = 470,728.38 × 281,770.24
  4. Step 4: Simplify right side
    315,428.18x = 132,637,248,607.41
  5. Step 5: Solve for x
    x = 132,637,248,607.41/315,428.18
  6. Step 6: Final answer
    x = 420,499.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.