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Finding the Fourth Proportional to 402,215.70, 603,323.55 and 260,498.10

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Solution

The fourth proportional to 402,215.70, 603,323.55 and 260,498.10 is: 390,747.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,215.70 : 603,323.55 = 260,498.10 : x
  2. Step 2: Convert to fraction form
    402,215.70/603,323.55 = 260,498.10/x
  3. Step 3: Cross multiply
    402,215.70x = 603,323.55 × 260,498.10
  4. Step 4: Simplify right side
    402,215.70x = 157,164,638,460.26
  5. Step 5: Solve for x
    x = 157,164,638,460.26/402,215.70
  6. Step 6: Final answer
    x = 390,747.15

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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.