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Finding the Fourth Proportional to 281,291,803.96, 421,953,649.04 and 87,230,808.40

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Solution

The fourth proportional to 281,291,803.96, 421,953,649.04 and 87,230,808.40 is: 130,851,156.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,291,803.96 : 421,953,649.04 = 87,230,808.40 : x
  2. Step 2: Convert to fraction form
    281,291,803.96/421,953,649.04 = 87,230,808.40/x
  3. Step 3: Cross multiply
    281,291,803.96x = 421,953,649.04 × 87,230,808.40
  4. Step 4: Simplify right side
    281,291,803.96x = 36,807,357,913,089,088
  5. Step 5: Solve for x
    x = 36,807,357,913,089,088/281,291,803.96
  6. Step 6: Final answer
    x = 130,851,156.68

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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.