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Finding the Fourth Proportional to 219,497.07, 329,019.62 and 86,323.35

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Solution

The fourth proportional to 219,497.07, 329,019.62 and 86,323.35 is: 129,396.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,497.07 : 329,019.62 = 86,323.35 : x
  2. Step 2: Convert to fraction form
    219,497.07/329,019.62 = 86,323.35/x
  3. Step 3: Cross multiply
    219,497.07x = 329,019.62 × 86,323.35
  4. Step 4: Simplify right side
    219,497.07x = 28,402,075,382.51
  5. Step 5: Solve for x
    x = 28,402,075,382.51/219,497.07
  6. Step 6: Final answer
    x = 129,396.15

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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.