Home / 289,400.40-434,075.28-89,716.32

Finding the Fourth Proportional to 289,400.40, 434,075.28 and 89,716.32

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Solution

The fourth proportional to 289,400.40, 434,075.28 and 89,716.32 is: 134,566.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,400.40 : 434,075.28 = 89,716.32 : x
  2. Step 2: Convert to fraction form
    289,400.40/434,075.28 = 89,716.32/x
  3. Step 3: Cross multiply
    289,400.40x = 434,075.28 × 89,716.32
  4. Step 4: Simplify right side
    289,400.40x = 38,943,636,724.57
  5. Step 5: Solve for x
    x = 38,943,636,724.57/289,400.40
  6. Step 6: Final answer
    x = 134,566.63

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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.