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Finding the Fourth Proportional to 211,303.84, 291,078.48 and 180,990.40

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Solution

The fourth proportional to 211,303.84, 291,078.48 and 180,990.40 is: 249,320.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,303.84 : 291,078.48 = 180,990.40 : x
  2. Step 2: Convert to fraction form
    211,303.84/291,078.48 = 180,990.40/x
  3. Step 3: Cross multiply
    211,303.84x = 291,078.48 × 180,990.40
  4. Step 4: Simplify right side
    211,303.84x = 52,682,410,526.59
  5. Step 5: Solve for x
    x = 52,682,410,526.59/211,303.84
  6. Step 6: Final answer
    x = 249,320.65

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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.