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Finding the Fourth Proportional to 407,031.36, 610,393.68 and 170,390.40

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Solution

The fourth proportional to 407,031.36, 610,393.68 and 170,390.40 is: 255,521.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,031.36 : 610,393.68 = 170,390.40 : x
  2. Step 2: Convert to fraction form
    407,031.36/610,393.68 = 170,390.40/x
  3. Step 3: Cross multiply
    407,031.36x = 610,393.68 × 170,390.40
  4. Step 4: Simplify right side
    407,031.36x = 104,005,223,292.67
  5. Step 5: Solve for x
    x = 104,005,223,292.67/407,031.36
  6. Step 6: Final answer
    x = 255,521.40

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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.