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Finding the Fourth Proportional to 286,448.79, 429,695.06 and 86,785.72

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Solution

The fourth proportional to 286,448.79, 429,695.06 and 86,785.72 is: 130,185.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,448.79 : 429,695.06 = 86,785.72 : x
  2. Step 2: Convert to fraction form
    286,448.79/429,695.06 = 86,785.72/x
  3. Step 3: Cross multiply
    286,448.79x = 429,695.06 × 86,785.72
  4. Step 4: Simplify right side
    286,448.79x = 37,291,395,162.54
  5. Step 5: Solve for x
    x = 37,291,395,162.54/286,448.79
  6. Step 6: Final answer
    x = 130,185.21

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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.