Finding the Fourth Proportional to 368,640,776.24, 508,739,726.36 and 212,008,005.52
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Solution
The fourth proportional to 368,640,776.24, 508,739,726.36 and 212,008,005.52 is: 292,579,935.99
Step by Step Solution
- Step 1: Write the proportion equation
368,640,776.24 : 508,739,726.36 = 212,008,005.52 : x - Step 2: Convert to fraction form
368,640,776.24/508,739,726.36 = 212,008,005.52/x - Step 3: Cross multiply
368,640,776.24x = 508,739,726.36 × 212,008,005.52 - Step 4: Simplify right side
368,640,776.24x = 107,856,894,714,374,176 - Step 5: Solve for x
x = 107,856,894,714,374,176/368,640,776.24 - Step 6: Final answer
x = 292,579,935.99
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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.