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Finding the Fourth Proportional to 282,956.04, 390,472.92 and 155,628.90

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Solution

The fourth proportional to 282,956.04, 390,472.92 and 155,628.90 is: 214,764.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,956.04 : 390,472.92 = 155,628.90 : x
  2. Step 2: Convert to fraction form
    282,956.04/390,472.92 = 155,628.90/x
  3. Step 3: Cross multiply
    282,956.04x = 390,472.92 × 155,628.90
  4. Step 4: Simplify right side
    282,956.04x = 60,768,871,019.39
  5. Step 5: Solve for x
    x = 60,768,871,019.39/282,956.04
  6. Step 6: Final answer
    x = 214,764.35

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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.