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Finding the Fourth Proportional to 298,935,637.60, 448,403,456.40 and 161,186,130.40

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Solution

The fourth proportional to 298,935,637.60, 448,403,456.40 and 161,186,130.40 is: 241,779,195.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,935,637.60 : 448,403,456.40 = 161,186,130.40 : x
  2. Step 2: Convert to fraction form
    298,935,637.60/448,403,456.40 = 161,186,130.40/x
  3. Step 3: Cross multiply
    298,935,637.60x = 448,403,456.40 × 161,186,130.40
  4. Step 4: Simplify right side
    298,935,637.60x = 72,276,417,995,101,120
  5. Step 5: Solve for x
    x = 72,276,417,995,101,120/298,935,637.60
  6. Step 6: Final answer
    x = 241,779,195.60

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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.