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Finding the Fourth Proportional to 612,316.47, 918,892.68 and 212,953.26

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Solution

The fourth proportional to 612,316.47, 918,892.68 and 212,953.26 is: 319,575.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,316.47 : 918,892.68 = 212,953.26 : x
  2. Step 2: Convert to fraction form
    612,316.47/918,892.68 = 212,953.26/x
  3. Step 3: Cross multiply
    612,316.47x = 918,892.68 × 212,953.26
  4. Step 4: Simplify right side
    612,316.47x = 195,681,191,796.14
  5. Step 5: Solve for x
    x = 195,681,191,796.14/612,316.47
  6. Step 6: Final answer
    x = 319,575.25

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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.