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Finding the Fourth Proportional to 423,271.47, 584,140.88 and 279,782.67

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Solution

The fourth proportional to 423,271.47, 584,140.88 and 279,782.67 is: 386,117.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,271.47 : 584,140.88 = 279,782.67 : x
  2. Step 2: Convert to fraction form
    423,271.47/584,140.88 = 279,782.67/x
  3. Step 3: Cross multiply
    423,271.47x = 584,140.88 × 279,782.67
  4. Step 4: Simplify right side
    423,271.47x = 163,432,493,663.64
  5. Step 5: Solve for x
    x = 163,432,493,663.64/423,271.47
  6. Step 6: Final answer
    x = 386,117.43

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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.