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Finding the Fourth Proportional to 292,896,679.60, 439,345,019.40 and 260,018,196.40

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Solution

The fourth proportional to 292,896,679.60, 439,345,019.40 and 260,018,196.40 is: 390,027,294.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,896,679.60 : 439,345,019.40 = 260,018,196.40 : x
  2. Step 2: Convert to fraction form
    292,896,679.60/439,345,019.40 = 260,018,196.40/x
  3. Step 3: Cross multiply
    292,896,679.60x = 439,345,019.40 × 260,018,196.40
  4. Step 4: Simplify right side
    292,896,679.60x = 114,237,699,541,711,008
  5. Step 5: Solve for x
    x = 114,237,699,541,711,008/292,896,679.60
  6. Step 6: Final answer
    x = 390,027,294.60

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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.