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Finding the Fourth Proportional to 288,660.69, 432,880.28 and 99,085.71

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Solution

The fourth proportional to 288,660.69, 432,880.28 and 99,085.71 is: 148,590.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,660.69 : 432,880.28 = 99,085.71 : x
  2. Step 2: Convert to fraction form
    288,660.69/432,880.28 = 99,085.71/x
  3. Step 3: Cross multiply
    288,660.69x = 432,880.28 × 99,085.71
  4. Step 4: Simplify right side
    288,660.69x = 42,892,249,393.37
  5. Step 5: Solve for x
    x = 42,892,249,393.37/288,660.69
  6. Step 6: Final answer
    x = 148,590.55

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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.