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Finding the Fourth Proportional to 315,483.07, 473,292.65 and 90,841.99

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Solution

The fourth proportional to 315,483.07, 473,292.65 and 90,841.99 is: 136,282.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,483.07 : 473,292.65 = 90,841.99 : x
  2. Step 2: Convert to fraction form
    315,483.07/473,292.65 = 90,841.99/x
  3. Step 3: Cross multiply
    315,483.07x = 473,292.65 × 90,841.99
  4. Step 4: Simplify right side
    315,483.07x = 42,994,846,178.37
  5. Step 5: Solve for x
    x = 42,994,846,178.37/315,483.07
  6. Step 6: Final answer
    x = 136,282.58

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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.