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Finding the Fourth Proportional to 315,685.65, 434,760.56 and 295,424.01

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Solution

The fourth proportional to 315,685.65, 434,760.56 and 295,424.01 is: 406,856.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,685.65 : 434,760.56 = 295,424.01 : x
  2. Step 2: Convert to fraction form
    315,685.65/434,760.56 = 295,424.01/x
  3. Step 3: Cross multiply
    315,685.65x = 434,760.56 × 295,424.01
  4. Step 4: Simplify right side
    315,685.65x = 128,438,709,317.53
  5. Step 5: Solve for x
    x = 128,438,709,317.53/315,685.65
  6. Step 6: Final answer
    x = 406,856.34

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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.