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Finding the Fourth Proportional to 472,430.79, 651,948.21 and 257,570.46

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Solution

The fourth proportional to 472,430.79, 651,948.21 and 257,570.46 is: 355,443.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,430.79 : 651,948.21 = 257,570.46 : x
  2. Step 2: Convert to fraction form
    472,430.79/651,948.21 = 257,570.46/x
  3. Step 3: Cross multiply
    472,430.79x = 651,948.21 × 257,570.46
  4. Step 4: Simplify right side
    472,430.79x = 167,922,600,345.88
  5. Step 5: Solve for x
    x = 167,922,600,345.88/472,430.79
  6. Step 6: Final answer
    x = 355,443.81

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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.