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Finding the Fourth Proportional to 286,707.06, 395,665.88 and 157,655.32

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Solution

The fourth proportional to 286,707.06, 395,665.88 and 157,655.32 is: 217,569.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,707.06 : 395,665.88 = 157,655.32 : x
  2. Step 2: Convert to fraction form
    286,707.06/395,665.88 = 157,655.32/x
  3. Step 3: Cross multiply
    286,707.06x = 395,665.88 × 157,655.32
  4. Step 4: Simplify right side
    286,707.06x = 62,378,830,924.48
  5. Step 5: Solve for x
    x = 62,378,830,924.48/286,707.06
  6. Step 6: Final answer
    x = 217,569.92

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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.