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Finding the Fourth Proportional to 286,670.81, 430,124.61 and 144,439.22

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Solution

The fourth proportional to 286,670.81, 430,124.61 and 144,439.22 is: 216,718.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,670.81 : 430,124.61 = 144,439.22 : x
  2. Step 2: Convert to fraction form
    286,670.81/430,124.61 = 144,439.22/x
  3. Step 3: Cross multiply
    286,670.81x = 430,124.61 × 144,439.22
  4. Step 4: Simplify right side
    286,670.81x = 62,126,863,171.20
  5. Step 5: Solve for x
    x = 62,126,863,171.20/286,670.81
  6. Step 6: Final answer
    x = 216,718.48

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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.