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Finding the Fourth Proportional to 369,072.83, 553,412.41 and 191,138.51

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Solution

The fourth proportional to 369,072.83, 553,412.41 and 191,138.51 is: 286,605.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,072.83 : 553,412.41 = 191,138.51 : x
  2. Step 2: Convert to fraction form
    369,072.83/553,412.41 = 191,138.51/x
  3. Step 3: Cross multiply
    369,072.83x = 553,412.41 × 191,138.51
  4. Step 4: Simplify right side
    369,072.83x = 105,778,423,462.91
  5. Step 5: Solve for x
    x = 105,778,423,462.91/369,072.83
  6. Step 6: Final answer
    x = 286,605.83

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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.