Home / 210,831,731.80-316,218,437.70-65,365,322.20

Finding the Fourth Proportional to 210,831,731.80, 316,218,437.70 and 65,365,322.20

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Solution

The fourth proportional to 210,831,731.80, 316,218,437.70 and 65,365,322.20 is: 98,038,942.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,831,731.80 : 316,218,437.70 = 65,365,322.20 : x
  2. Step 2: Convert to fraction form
    210,831,731.80/316,218,437.70 = 65,365,322.20/x
  3. Step 3: Cross multiply
    210,831,731.80x = 316,218,437.70 × 65,365,322.20
  4. Step 4: Simplify right side
    210,831,731.80x = 20,669,720,065,841,128
  5. Step 5: Solve for x
    x = 20,669,720,065,841,128/210,831,731.80
  6. Step 6: Final answer
    x = 98,038,942.66

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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.