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Finding the Fourth Proportional to 291,152.48, 402,009.41 and 286,502.33

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Solution

The fourth proportional to 291,152.48, 402,009.41 and 286,502.33 is: 395,588.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,152.48 : 402,009.41 = 286,502.33 : x
  2. Step 2: Convert to fraction form
    291,152.48/402,009.41 = 286,502.33/x
  3. Step 3: Cross multiply
    291,152.48x = 402,009.41 × 286,502.33
  4. Step 4: Simplify right side
    291,152.48x = 115,176,634,368.21
  5. Step 5: Solve for x
    x = 115,176,634,368.21/291,152.48
  6. Step 6: Final answer
    x = 395,588.72

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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.