Finding the Fourth Proportional to 253,512,579,830.76, 349,855,750,237.99 and 139,331,248,037.64
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Solution
The fourth proportional to 253,512,579,830.76, 349,855,750,237.99 and 139,331,248,037.64 is: 192,281,733,499.56
Step by Step Solution
- Step 1: Write the proportion equation
253,512,579,830.76 : 349,855,750,237.99 = 139,331,248,037.64 : x - Step 2: Convert to fraction form
253,512,579,830.76/349,855,750,237.99 = 139,331,248,037.64/x - Step 3: Cross multiply
253,512,579,830.76x = 349,855,750,237.99 × 139,331,248,037.64 - Step 4: Simplify right side
253,512,579,830.76x = 48,745,838,313,804,021,104,640 - Step 5: Solve for x
x = 48,745,838,313,804,021,104,640/253,512,579,830.76 - Step 6: Final answer
x = 192,281,733,499.56
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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.