Home / 256,371,570.52-353,792,288.63-138,899,820.40

Finding the Fourth Proportional to 256,371,570.52, 353,792,288.63 and 138,899,820.40

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Solution

The fourth proportional to 256,371,570.52, 353,792,288.63 and 138,899,820.40 is: 191,681,492.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,371,570.52 : 353,792,288.63 = 138,899,820.40 : x
  2. Step 2: Convert to fraction form
    256,371,570.52/353,792,288.63 = 138,899,820.40/x
  3. Step 3: Cross multiply
    256,371,570.52x = 353,792,288.63 × 138,899,820.40
  4. Step 4: Simplify right side
    256,371,570.52x = 49,141,685,349,611,960
  5. Step 5: Solve for x
    x = 49,141,685,349,611,960/256,371,570.52
  6. Step 6: Final answer
    x = 191,681,492.80

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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.