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Finding the Fourth Proportional to 288,547.99, 432,685.77 and 168,639.34

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Solution

The fourth proportional to 288,547.99, 432,685.77 and 168,639.34 is: 252,879.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,547.99 : 432,685.77 = 168,639.34 : x
  2. Step 2: Convert to fraction form
    288,547.99/432,685.77 = 168,639.34/x
  3. Step 3: Cross multiply
    288,547.99x = 432,685.77 × 168,639.34
  4. Step 4: Simplify right side
    288,547.99x = 72,967,842,918.71
  5. Step 5: Solve for x
    x = 72,967,842,918.71/288,547.99
  6. Step 6: Final answer
    x = 252,879.40

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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.