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Finding the Fourth Proportional to 660,166.40, 990,090.12 and 304,838.72

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Solution

The fourth proportional to 660,166.40, 990,090.12 and 304,838.72 is: 457,184.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,166.40 : 990,090.12 = 304,838.72 : x
  2. Step 2: Convert to fraction form
    660,166.40/990,090.12 = 304,838.72/x
  3. Step 3: Cross multiply
    660,166.40x = 990,090.12 × 304,838.72
  4. Step 4: Simplify right side
    660,166.40x = 301,817,804,865.45
  5. Step 5: Solve for x
    x = 301,817,804,865.45/660,166.40
  6. Step 6: Final answer
    x = 457,184.44

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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.