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Finding the Fourth Proportional to 210,252.80, 314,860.80 and 139,750.40

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Solution

The fourth proportional to 210,252.80, 314,860.80 and 139,750.40 is: 209,281.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,252.80 : 314,860.80 = 139,750.40 : x
  2. Step 2: Convert to fraction form
    210,252.80/314,860.80 = 139,750.40/x
  3. Step 3: Cross multiply
    210,252.80x = 314,860.80 × 139,750.40
  4. Step 4: Simplify right side
    210,252.80x = 44,001,922,744.32
  5. Step 5: Solve for x
    x = 44,001,922,744.32/210,252.80
  6. Step 6: Final answer
    x = 209,281.03

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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.