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Finding the Fourth Proportional to 313,482.98, 432,738.90 and 211,646.36

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Solution

The fourth proportional to 313,482.98, 432,738.90 and 211,646.36 is: 292,161.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,482.98 : 432,738.90 = 211,646.36 : x
  2. Step 2: Convert to fraction form
    313,482.98/432,738.90 = 211,646.36/x
  3. Step 3: Cross multiply
    313,482.98x = 432,738.90 × 211,646.36
  4. Step 4: Simplify right side
    313,482.98x = 91,587,610,851.71
  5. Step 5: Solve for x
    x = 91,587,610,851.71/313,482.98
  6. Step 6: Final answer
    x = 292,161.36

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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.