Home / 256,521,987.04-354,004,878-139,051,218.40

Finding the Fourth Proportional to 256,521,987.04, 354,004,878 and 139,051,218.40

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Solution

The fourth proportional to 256,521,987.04, 354,004,878 and 139,051,218.40 is: 191,893,140.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,521,987.04 : 354,004,878 = 139,051,218.40 : x
  2. Step 2: Convert to fraction form
    256,521,987.04/354,004,878 = 139,051,218.40/x
  3. Step 3: Cross multiply
    256,521,987.04x = 354,004,878 × 139,051,218.40
  4. Step 4: Simplify right side
    256,521,987.04x = 49,224,809,605,443,360
  5. Step 5: Solve for x
    x = 49,224,809,605,443,360/256,521,987.04
  6. Step 6: Final answer
    x = 191,893,140.13

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1.5x scale

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.