Home / 281,069,543.09-387,888,090.66-155,621,741.40

Finding the Fourth Proportional to 281,069,543.09, 387,888,090.66 and 155,621,741.40

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Solution

The fourth proportional to 281,069,543.09, 387,888,090.66 and 155,621,741.40 is: 214,764,714.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,069,543.09 : 387,888,090.66 = 155,621,741.40 : x
  2. Step 2: Convert to fraction form
    281,069,543.09/387,888,090.66 = 155,621,741.40/x
  3. Step 3: Cross multiply
    281,069,543.09x = 387,888,090.66 × 155,621,741.40
  4. Step 4: Simplify right side
    281,069,543.09x = 60,363,820,136,830,280
  5. Step 5: Solve for x
    x = 60,363,820,136,830,280/281,069,543.09
  6. Step 6: Final answer
    x = 214,764,714.36

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.