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Finding the Fourth Proportional to 286,484.72, 395,347.58 and 157,431.21

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Solution

The fourth proportional to 286,484.72, 395,347.58 and 157,431.21 is: 217,254.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,484.72 : 395,347.58 = 157,431.21 : x
  2. Step 2: Convert to fraction form
    286,484.72/395,347.58 = 157,431.21/x
  3. Step 3: Cross multiply
    286,484.72x = 395,347.58 × 157,431.21
  4. Step 4: Simplify right side
    286,484.72x = 62,240,048,283.55
  5. Step 5: Solve for x
    x = 62,240,048,283.55/286,484.72
  6. Step 6: Final answer
    x = 217,254.34

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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.