Home / 387,109,113.20-580,663,669.80-171,698,361.20

Finding the Fourth Proportional to 387,109,113.20, 580,663,669.80 and 171,698,361.20

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Solution

The fourth proportional to 387,109,113.20, 580,663,669.80 and 171,698,361.20 is: 257,547,541.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,109,113.20 : 580,663,669.80 = 171,698,361.20 : x
  2. Step 2: Convert to fraction form
    387,109,113.20/580,663,669.80 = 171,698,361.20/x
  3. Step 3: Cross multiply
    387,109,113.20x = 580,663,669.80 × 171,698,361.20
  4. Step 4: Simplify right side
    387,109,113.20x = 99,699,000,513,037,920
  5. Step 5: Solve for x
    x = 99,699,000,513,037,920/387,109,113.20
  6. Step 6: Final answer
    x = 257,547,541.80

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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.