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Finding the Fourth Proportional to 215,409, 297,271.26 and 134,810.76

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Solution

The fourth proportional to 215,409, 297,271.26 and 134,810.76 is: 186,043.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,409 : 297,271.26 = 134,810.76 : x
  2. Step 2: Convert to fraction form
    215,409/297,271.26 = 134,810.76/x
  3. Step 3: Cross multiply
    215,409x = 297,271.26 × 134,810.76
  4. Step 4: Simplify right side
    215,409x = 40,075,364,486.76
  5. Step 5: Solve for x
    x = 40,075,364,486.76/215,409
  6. Step 6: Final answer
    x = 186,043.13

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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.