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Finding the Fourth Proportional to 304,210.89, 455,186.39 and 191,364.12

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Solution

The fourth proportional to 304,210.89, 455,186.39 and 191,364.12 is: 286,335.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,210.89 : 455,186.39 = 191,364.12 : x
  2. Step 2: Convert to fraction form
    304,210.89/455,186.39 = 191,364.12/x
  3. Step 3: Cross multiply
    304,210.89x = 455,186.39 × 191,364.12
  4. Step 4: Simplify right side
    304,210.89x = 87,106,342,001.51
  5. Step 5: Solve for x
    x = 87,106,342,001.51/304,210.89
  6. Step 6: Final answer
    x = 286,335.38

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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.