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Finding the Fourth Proportional to 286,774.16, 395,752.91 and 157,718.27

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Solution

The fourth proportional to 286,774.16, 395,752.91 and 157,718.27 is: 217,653.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,774.16 : 395,752.91 = 157,718.27 : x
  2. Step 2: Convert to fraction form
    286,774.16/395,752.91 = 157,718.27/x
  3. Step 3: Cross multiply
    286,774.16x = 395,752.91 × 157,718.27
  4. Step 4: Simplify right side
    286,774.16x = 62,417,464,513.46
  5. Step 5: Solve for x
    x = 62,417,464,513.46/286,774.16
  6. Step 6: Final answer
    x = 217,653.73

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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.