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Finding the Fourth Proportional to 288,360.40, 432,540.54 and 209,973.46

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Solution

The fourth proportional to 288,360.40, 432,540.54 and 209,973.46 is: 314,960.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,360.40 : 432,540.54 = 209,973.46 : x
  2. Step 2: Convert to fraction form
    288,360.40/432,540.54 = 209,973.46/x
  3. Step 3: Cross multiply
    288,360.40x = 432,540.54 × 209,973.46
  4. Step 4: Simplify right side
    288,360.40x = 90,822,033,774.07
  5. Step 5: Solve for x
    x = 90,822,033,774.07/288,360.40
  6. Step 6: Final answer
    x = 314,960.15

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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.