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Finding the Fourth Proportional to 284,614.74, 392,769.51 and 155,555.82

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Solution

The fourth proportional to 284,614.74, 392,769.51 and 155,555.82 is: 214,667.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    284,614.74 : 392,769.51 = 155,555.82 : x
  2. Step 2: Convert to fraction form
    284,614.74/392,769.51 = 155,555.82/x
  3. Step 3: Cross multiply
    284,614.74x = 392,769.51 × 155,555.82
  4. Step 4: Simplify right side
    284,614.74x = 61,097,583,199.05
  5. Step 5: Solve for x
    x = 61,097,583,199.05/284,614.74
  6. Step 6: Final answer
    x = 214,667.67

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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.