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Finding the Fourth Proportional to 313,482.40, 432,738.10 and 211,645.76

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Solution

The fourth proportional to 313,482.40, 432,738.10 and 211,645.76 is: 292,160.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,482.40 : 432,738.10 = 211,645.76 : x
  2. Step 2: Convert to fraction form
    313,482.40/432,738.10 = 211,645.76/x
  3. Step 3: Cross multiply
    313,482.40x = 432,738.10 × 211,645.76
  4. Step 4: Simplify right side
    313,482.40x = 91,587,184,055.46
  5. Step 5: Solve for x
    x = 91,587,184,055.46/313,482.40
  6. Step 6: Final answer
    x = 292,160.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.