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Finding the Fourth Proportional to 507,988.68, 761,987.63 and 219,746.52

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Solution

The fourth proportional to 507,988.68, 761,987.63 and 219,746.52 is: 329,621.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    507,988.68 : 761,987.63 = 219,746.52 : x
  2. Step 2: Convert to fraction form
    507,988.68/761,987.63 = 219,746.52/x
  3. Step 3: Cross multiply
    507,988.68x = 761,987.63 × 219,746.52
  4. Step 4: Simplify right side
    507,988.68x = 167,444,129,975.55
  5. Step 5: Solve for x
    x = 167,444,129,975.55/507,988.68
  6. Step 6: Final answer
    x = 329,621.77

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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.