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Finding the Fourth Proportional to 487,509.09, 731,436.83 and 217,612.77

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Solution

The fourth proportional to 487,509.09, 731,436.83 and 217,612.77 is: 326,496.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,509.09 : 731,436.83 = 217,612.77 : x
  2. Step 2: Convert to fraction form
    487,509.09/731,436.83 = 217,612.77/x
  3. Step 3: Cross multiply
    487,509.09x = 731,436.83 × 217,612.77
  4. Step 4: Simplify right side
    487,509.09x = 159,169,994,656.32
  5. Step 5: Solve for x
    x = 159,169,994,656.32/487,509.09
  6. Step 6: Final answer
    x = 326,496.47

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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.