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Finding the Fourth Proportional to 283,864.51, 391,715.13 and 162,920.68

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Solution

The fourth proportional to 283,864.51, 391,715.13 and 162,920.68 is: 224,820.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,864.51 : 391,715.13 = 162,920.68 : x
  2. Step 2: Convert to fraction form
    283,864.51/391,715.13 = 162,920.68/x
  3. Step 3: Cross multiply
    283,864.51x = 391,715.13 × 162,920.68
  4. Step 4: Simplify right side
    283,864.51x = 63,818,495,345.89
  5. Step 5: Solve for x
    x = 63,818,495,345.89/283,864.51
  6. Step 6: Final answer
    x = 224,820.27

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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.